Torsional asymmetry in suspension bridge systems

[摘要] In this paper a dynamic linear model of suspension bridge center spans is formulated and three different ways of fixing the main cables are studied. The model describes vertical and torsional oscillations of the deck under the action of lateral wind. The mutual interactions of main cables, center span, and hangers are analyzed. Three variational evolutions are analyzed. The variational equations correspond to the way how the main cables are fixed. The existence, uniqueness, and continuous dependence on data are proved.

[学科分类] 应用数学

[关键词] suspension bridge;Hamilton principle;vertical oscillation;torsional oscillation;existence;uniqueness;continuous dependence on data